Telescoping ladder rung



FIG. 1 is a front view of a telescoping ladder rung showing our new design in its ordinary environment, mounted on a telescoping ladder;

FIG. 2 is a perspective view of the telescoping ladder rung;

FIG. 3 is a top view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a right end view thereof, the left side being a mirror image; and

FIG. 7 is a bottom view thereof.

Broken lines are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a telescoping ladder rung, as shown and described. 